thout seeing them, for he was in a delirium of fever.

"Have you my formulae?" he asked. "I want them back!"

"You shall have them in the morning," replied Tom soothingly. "Lie
down, and I'll bring them to you in the morning. And drink this," he
added, holding out a glass of soothing mixture which the doctor had
ordered in case the patient should become violent.

Josephus Baxter glared about with wild eyes, but between them Tom and
Mrs. Baggert managed to get him to drink the mixture.

"Bah! It's as bad as some of my chemicals!" spluttered the chemist, as
he handed back the glass. "You are sure you'll have my formulae in the
morning?" he asked, as he turned to go back to his room.

"I'll do my best," declared Tom cheerfully. "Now please lie down."

Which, after some urging, Mr. Baxter consented to do. Eradicate wanted
to lie down in the hall outside the excited chemist's door to guard
against his emerging again, but Tom decided on Koku. The giant, though
not as intelligent as the colored man, was more efficient in an
emergency because of his great strength. Eradicate was getting old,
and there was a pathetic droop to his figure as he shuffled off when
Koku superseded him.

"Ah done guess Ah ain't wanted much mo'," muttered Rad sadly.

"Oh, yes, you are!" cried Tom, as, the excitement over, he walked
downstairs with Ned. "I'm going to start something new, Rad, and I'll
need your help."

"Will yo', really, Massa Tom?" exclaimed faithful Rad, his face
lighting up. "Dat's good! Is yo' goin' off after mo' diamonds, or up to
de caves of ice?"

"Not quite that," answered the young inventor, recalling the stirring
experiences that had fallen to him when on those voyages. "I'm going to
work around home, Rad, and I'll need your help."

"Anyt'ing yo' wants, Massa Tom! Anyt'ing yo' wants!" offered the now
delighted Rad, and he went to bed much happier.

"Well, to resume where we left off," began Ned, when he and Tom were
once more by themselves, "what's the game?"

"Oh, I don't know that it's much of a game," was the answer. "But I
just have an idea that a big fire in a towering building can be fought
from above with chemicals, as well as from the ground with streams of
water.

"Well, I guess it could be," Ned agreed. "But how are you going to get
your chemicals in at the top? Shoot 'em up through a hose? If you do
that you'll need a special kind of hose, for the chemicals will rot
anything like rubber or canva